DEV Community: QUDDUS

Major Attacks on Vercel in 2025

QUDDUS — Mon, 27 Jul 2026 15:42:21 +0000

Cybersecurity Watch: Recent Threat Trends on Vercel

If you deploy web apps using modern cloud platforms like Vercel, recent security trends offer an important wake-up call. Over the past year, threat actors have targeted both developer tools and hosting infrastructure in clever new ways.

Here are the three big security threats teams faced—and how to stay safe.

1. Supply-Chain Attacks on `npm`

In a major phishing campaign, attackers stole credentials from popular package maintainers. They injected wallet-draining malware into 18 widely used npm packages, including chalk and debug. This single attack impacted over 70 developer teams deploying on Vercel.

2. Framework Vulnerabilities

Security researchers uncovered critical vulnerabilities in React Server Components (RSC) and React 19 frameworks like Next.js. Under certain conditions, these flaws could allow hackers to run harmful code remotely or steal private source code.

3. Fake Subdomains Used for Phishing

Because *.vercel.app is a trusted web address, cybercriminals used free Vercel subdomains to host fake landing pages (like fake Adobe PDF readers). Unsuspecting users were tricked into downloading malware and remote access tools that bypassed basic email filters.

What You Should Do

Lock your dependencies: Use lockfiles (package-lock.json) and pin exact package versions so unexpected updates don't break or compromise your site.
Update your frameworks: Apply patches to Next.js and React immediately when new security fixes are released.
Stay alert: Treat links from free platform subdomains with the same caution as any unknown website.

Unexpected UI system in my first project.

QUDDUS — Sun, 08 Mar 2026 08:59:11 +0000

About a month into my React journey, I hit a turning point where I had to commit to building my first real project. I decided to develop an Employee Management System using localStorage for data persistence.

At that time, I was completely unfamiliar with the broader ecosystem—I didn't know what Tailwind CSS and components libraries was, and popular tools like shadcn/ui weren't even on my radar. I just stumbled upon a design system called NextUI (now known as HeroUI ) 😅. Even without understanding the underlying mechanics of a design system or how it made my UI look so polished according to my thoughts, I was able to build an interface that was incredibly beautiful and highly customizable right out of the box.

Looking back, it’s impressive how that choice elevated my project's design before I even understood the "why" behind it. Today, that same system has expanded into HeroUI, even offering a native version for React Native with high customizations.

JSX — A Formal View (JavaScript + XML Syntax Extension)

QUDDUS — Thu, 05 Mar 2026 18:02:49 +0000

JSX (JavaScript XML) is a syntax extension for JavaScript that allows developers to describe UI structures using a markup-like syntax embedded directly in JavaScript code.

At a conceptual level, JSX is not HTML and it is not executed by browsers directly. Instead, it acts as a declarative representation of a UI tree which is later transformed into standard JavaScript function calls during compilation.

Compilation Model

A JSX expression such as:

const element = <h1>Hello World</h1>;

is transformed by a compiler (e.g., Babel) into:

const element = React.createElement("h1", null, "Hello World");

or in modern React runtimes:

import { jsx } from "react/jsx-runtime";
const element = jsx("h1", { children: "Hello World" });

Why it is called JavaScript + XML

The name originates from two characteristics:

JavaScript Integration

JSX exists inside JavaScript.
Any JavaScript expression can be embedded using "{}".

   const name = "Quddus";
const element = <h1>Hello {name}</h1>;

XML-like Structure

JSX uses XML-style syntax rules such as:
Nested elements
Explicit closing tags
Attribute-based element configuration

   <div className="container">
  <h1>Title</h1>
   </div>

Functional Role in React

From a theoretical perspective, JSX serves as a domain-specific language (DSL) for defining a virtual DOM tree.
During rendering, React interprets the resulting JavaScript objects to construct and reconcile the Virtual DOM, enabling efficient UI updates through a diffing algorithm.

So,

JSX can therefore be understood as:

A syntactic abstraction layer
A declarative UI description language
A compile-time transformation into JavaScript object structures that represent interface elements.

Vibe Coding is best for repid development but, most of programmer don't knows about .

QUDDUS — Wed, 25 Feb 2026 00:47:45 +0000

In my coding journey, I have encountered many issues that needed correction. Often, my code runs perfectly, but it suffers from unstable optimizations related to security, scalability, or performance.

What You Should Know

AI tools, especially free ones used for coding, often have limited or outdated knowledge about the latest technologies you want to implement.

As a beginner, the main focus tends to be on making the code run correctly, rather than on optimizing it for scalability, security, or performance.

AI itself does not consistently write code in a uniform style or follow specific coding techniques.

If a human were in AI’s place, they would decide whether to use functional programming or class-based approaches. However, AI-generated code often mixes different coding styles within the same project, as seen in many AI-generated coding videos.
Solution
Beginners should learn about MCP (Model-Consistent Programming), which guides how to write code effectively when working with specific libraries or functions.

Before starting to code, consider which UI framework or libraries you will use. Then, look for MCP resources that train AI agents on how to use those libraries properly.

For example, if I want to build an application using shadcn UI, I would first search for MCP resources provided by shadcn UI. These resources help the AI understand how to use shadcn UI in a scalable and consistent manner.

Recommended AI Coding Agents

Claude Code
Gemini CLI
Copilot CLI

While Cursor, Anti gravity or Krea AI are excellent IDE, I recommend using CLI-based AI agents for better performance.

Best NodeJS Backend Frameworks

QUDDUS — Thu, 19 Feb 2026 13:56:53 +0000

Top Backend Frameworks

Some developer when they completely learnt expressJS. but, they only know one framework.

When developer have started a backend development they must know for what usecase.

There are more backend frameworks

NestJS - recommended for Native Apps
fastify - Provide fast and high scalable APIs handling.
koa.js - Lighter Backend for small apps
AdonisJS - MVC TypeScript Framework

is Back-End only Have APIs and DBMS connectivity!?

QUDDUS — Sat, 05 Apr 2025 13:09:53 +0000

What is Backend Development?

Backend development is a critical part of web and application development that encompasses many components beyond just databases and APIs. It includes several responsibilities to ensure the functionality, performance, and security of a system.

Key Aspects of Backend Development

1. Databases

Storage: Interacting with databases to store, retrieve, and manage data. Examples include:
- Relational Databases: MySQL, PostgreSQL
- NoSQL Databases: MongoDB, Redis
Data Modeling: Designing database structure, relationships, and indexes.
Queries: Writing queries to interact with the database (CRUD operations).

2. API Development

RESTful APIs: Developing APIs for communication between the frontend and backend.
GraphQL APIs: Building GraphQL APIs for clients to request only the data they need.

3. Server-Side Logic

Application Logic: Implementing business logic, algorithms, and essential functionality.
Request Handling: Processing incoming requests, interacting with the database, performing actions (e.g., user authentication), and sending responses.
User Authentication & Authorization: Managing login systems, session management, and ensuring access controls.
Middleware: Using middleware for error handling, logging, validation, and security checks.

4. Authentication and Authorization

Session Management: Handling user sessions, cookies, and JWT tokens.
OAuth / OAuth 2.0: Third-party authentication services like Google, Facebook, etc.

5. Server Management & Hosting

Web Servers: Configuring and managing web servers such as Nginx and Apache.
Cloud Hosting: Hosting backend systems on platforms like AWS, Azure, or Google Cloud.
Server Configuration: Managing server settings, environment variables, and deployments.

6. Performance Optimization

Caching: Using caching tools like Redis to optimize data retrieval and reduce database load.
Load Balancing: Distributing traffic across multiple servers to ensure high availability.
Rate Limiting: Controlling the number of requests a user can make to avoid server overload.

7. Security

Data Encryption: Ensuring data is encrypted in transit (HTTPS) and at rest.
API Security: Securing APIs against attacks like SQL injection, XSS, and ensuring data validation.
Firewalls & Security Policies: Implementing security policies to protect the application from unauthorized access.

8. Error Handling & Logging

Error Management: Gracefully handling errors without exposing sensitive information.
Logging: Keeping detailed logs of application activities, errors, and system health for troubleshooting and monitoring.

9. Testing

Unit Testing: Writing tests to verify individual components work as expected.
Integration Testing: Ensuring components work together correctly (e.g., database interactions, APIs).
Load/Stress Testing: Ensuring the application can handle high traffic loads.
End-to-End Testing: Simulating user actions to test the entire flow of the application.

10. Deployment and CI/CD

Continuous Integration & Continuous Deployment (CI/CD): Automating the testing, building, and deployment process for faster and error-free updates.
Version Control: Using Git for source code management and deployment.

So Server includes

Backend development covers much more than just databases and APIs. It involves working with server-side logic, authentication, security, performance, testing, and deployment. A backend developer needs proficiency in many tools and technologies to build efficient, scalable, and secure applications.